GM 6T45 6-Speed FWD Automatic · GM/Chevrolet/GMC/Cadillac/Buick · Expert rebuild service since 1987. Lifetime warranty. Free diagnostic.
2010–2019 Chevrolet Malibu (2.5L); 2010–2017 Buick LaCrosse (2.4L); 2010–2016 Buick Regal; 2010–2016 Chevrolet Impala (2.5L); medium GM FWD 6-speed
| Configuration | 6-speed FWD transaxle |
|---|---|
| Gear Ratios | 1st 4.48:1 · 2nd 2.87:1 · 3rd 1.84:1 · 4th 1.41:1 · 5th 1.00:1 · 6th 0.74:1 · Rev 3.82:1 |
| Fluid Type | Dexron VI ATF |
| Fluid Capacity | 8.5 qts total, 4.5 qts service refill |
Standard 6T-family SRV bore weakness.
Symptoms: 2nd-gear slip; harsh 1-2 shift
Solenoid body wear at 80k–120k miles.
Symptoms: Limp mode; P-codes; erratic shifts
The integrated FWD differential carrier bearings develop noise at high mileage.
Symptoms: Growl or hum from transaxle area; increases with speed
SRV bore kit. Solenoid body replaced. Differential carrier bearings inspected. All clutch packs replaced. Full soft parts kit.
Dexron VI every 40,000 miles.
Very similar — same gear ratios, different torque rating. The 6T45 is slightly heavier duty than the 6T40.
Likely differential carrier bearings — a common high-mileage failure on GM FWD transaxles. We inspect during any rebuild.
$1,600–2,200.
Dexron VI.
2 days.
Free diagnostic, written estimate, lifetime warranty. Chicago's 6T45 rebuild specialists since 1987.
